Bumper



June 17, 1924.

C. GERTZBEIN BUMPER Filed Sept. 21 1923 [In anion Patented-dune 17,1924.

BUMPER.

Application filed September 21, 1923. Serial No. 664,110.

To all whom it may concern Be it known that I, CARL GEn'rz EIN, a subject of the King of Great Brltain, and resident-of the city of Toronto, county of York, Province of Ontario, in the Domimon of Canada, have invented certain new and useful Improvements in Bumpers, as described in the following specificatiolrand illustrated in the accompanying drawings,

that form part of the same.

The principal objects of this invention are to devise a structure which will be extremely resilient and will be capable of absorbing extraordinary shocks, affording extraordinary fitted.

A further object is to devise a strong and durable structure which may be produced at low cost.

The principal feature of the invention consists in supporting the bumper bar on vertically disposed toggles and arranging 'strong springs to hold the toggles extended and to receive and absorb the shocks of im act.

' n the drawings, Figure 1 isa side elevational view of one of the bumper bar supporting units.

Figure2 is a in Fig. 1.

Figure 3 is a sectional detail of one of p the supporting brackets showing the manner of securing and supporting the toggle.

In the construction of bumper herein illustratedrigid bracket members 1 adapted to be secured to the frame of the car, are each formed with a vertical slot 2 arranged behind a cup-shaped portion 3. The forplan view of the unit shown 7 ward side of the slot is sloped upwardly and downwardly in a forward direction from the horizontal axis of the cup which presents a horizontal V-shaped bearing.

A pair of flat bars 4 and 5 are pivotally mounted on a bolt 6 extending transversely through the slotted portion of the bracket, said bolt cutting the axial line of the cup so that the edges of the bars rest upon the sloped surfaces 7 and 8 respectively of the slot. The bars project forwardly from the bracket and are of e ual length.

Similar bars 9 an 10 are pivotally con-' nected to the forward ends of the bars 4 and 5 and the ends of these bars are pivotally secured together by a bolt 11.

A cup member 12 of corresponding shape to the cup portion 3 of the bracketl, and formed with a similar vertical slot, embraces the forward ends of the bars 9 and 10 and is secured by the bolt11 which passes transversely therethrough on the axial line of the cup.

A toggle member is thus formed which will contract and expand freely.

A coiled compression spring 13 is arranged between the'cup members and nor- "mally holds the toggle extended. protection to the car to which it 1s The outer cup members 12 are formed at the outer end to support the bumper bars '14 here shown as tubes and these bumper bars may be of any suitable design.

In the use of the device, the toggle. membersare secured to the forward ends of the car frame and the springs hold the whole structure rigid and free from rattle. In the event of the bumper bars engaging an obstruction the springs will be compressed and the toggle bars pivoting on their pivotal connections will fold easily without resistance and immediately the pressure is removed the springs resume their normal shape and the toggles extend.

A device socon'structed is extremely flexible and will not bind in operationand will present an increasing resistance to any impact as the springs compress. It also presents a pleasing appearance on the front of a car. 1

lVhat I claim as my invention is 1. A bumper, comprising, vertically operable toggle members, a bar joining said toggles, and spring means for holding the toggles extended.

vertically op- 2. A bump p i e? an ]O1I11I1g sal erable toggle members, a

.toggles, and compresslon springs arranged said toggles adapted to hold them 2 memes and compression springs arranged horisaid bolts, cup members secured to-the outer zontally' between said pairs of bars. ends of the to gles, s iral compression 4. A bumper comprising, rigid bracket springs having t eir en s housed in said 10 members each having cupped ends and cups and holding the toggles extended, and 5 vertical slots formed with forwardly slopbumper bars supported by the outer cup ing surfaces, bolts extending horizontally members.

through said. slots, toggle bars pivoted on CARLGERTfiBEIN. 

